Phys. Rev. A 65, 042302 (2002) [4 pages]Nonsequential positive-operator-valued measurements on entangled mixed states do not always violate a Bell inequalityReceived 7 September 2001; published 14 March 2002 We present a local-hidden-variable model for positive-operator-valued measurements (an LHVPOV model) on a class of entangled generalized Werner states, thus demonstrating that such measurements do not always violate a Bell-type inequality. We also show that, in general, if the state ρ′ can be obtained from ρ with certainty by local quantum operations without classical communication, then an LHVPOV model for the state ρ implies the existence of such a model for ρ′. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.65.042302
DOI:
10.1103/PhysRevA.65.042302
PACS:
03.67.-a, 03.65.Ta, 03.65.Ud
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.